From d392927511f3ae268ac082ef23475d7f13213598 Mon Sep 17 00:00:00 2001
From: Caleb Maclennan <caleb@alerque.com>
Date: Fri, 29 Sep 2023 09:54:34 +0300
Subject: [PATCH] chore(classes): Return more informative error message when
 failing to finish class

---
 classes/base.lua | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/classes/base.lua b/classes/base.lua
index 7cd902029..b06428202 100644
--- a/classes/base.lua
+++ b/classes/base.lua
@@ -575,8 +575,8 @@ function class:finish ()
   end
   SILE.typesetter:runHooks("pageend") -- normally run by the typesetter
   self:endPage()
-  if SILE.typesetter then
-    assert(SILE.typesetter:isQueueEmpty(), "queues not empty")
+  if SILE.typesetter and not SILE.typesetter:isQueueEmpty() then
+    SU.error("Queues are not empty as expected after ending last page", true)
   end
   SILE.outputter:finish()
   self:runHooks("finish")